Re: 49 CFR Contamination Surveys

["Alan R. Marchand" <radarm@accessnv.com>]

173.443(a)(2) States you may use other methods of assessment of equal or
greater efficiency.

Alan R, Marchand
Las Vegas Nevada
radarm@accessnv.com


At 11:10 AM 6/26/98 -0500, you wrote:
>Greetings RadSafe,
>
>Hopefully an easy question regarding 49 CFR 173.443...  This section
>states that Table 11 contamination limits be compared against samples
>collected by "wiping an area of 300 square centimeters..."  How do you
>interpret this specification?
>
>I've heard of sites documenting a single-300 cm2 swipe, while others
>will document three-100 cm2 swipes.  (Note that the 100 cm2 area is the
>DOE standard).  Does the IAEA specify one method, or is one way better
>than the other, or does it really not matter what you do as long as the
>total area is 300 cm2?  I would also be interested in learning more
>about the evolution of IAEA swipe area requirements if someone out there
>is familiar with the basis...
>
>Appreciate it!  I've found RadSafers to be an outstanding source of
>info...
>
>Scott Sorensen
>ssorensen@doeal.gov
>